Phase 5: horde waves + machine-gun racket

Winning your 2nd splatter game (G.splatGames) — or triple-tapping the
umpire in splatter (forceZombies now calls startHorde) — launches a 12s
horde (TUNE.hordeLen). During a horde: the match ball is gone and taps do
nothing; the racket auto-fires pellets straight up-court at TUNE.mgRate
(6/s, ±4° spread, 26 m/s, flat, 1.2s life) and the thumb DRAG steers you
(auto-assist disabled). Zombies pour in at TUNE.hordeRate (2.5/s) from the
far baseline and the sides, ignoring zMax; the speed ramp still applies.

Pellets live in a new zombies.js `pellets` array, kill on contact (always
splatter-quality). splatter() gains a fanfare flag — pellet kills make
gore/piles/points but skip the multi-kill streak so a horde doesn't spam
MASSACRE. splatPoint() gains a quiet flag: during a horde the umpire only
calls a score every >2s (game-win lines always speak); the HUD score keeps
ticking. Horde ends → setupPoint() resumes serving, voice('quiet_dark');
leftover zombies stay for you to mop up. Eaten stays lethal during hordes
(a zombie reaching you ends it and clears the swarm). Pellets render as
2×2 yellow tracers with a ground shadow; serve prompt suppressed while
G.horde. window.T exposes pellets + forceZombies.

NOTE for Oliver: per spec every game won after the 2nd triggers a horde,
and games won by the machine gun mid-horde count too, so play gets very
horde-heavy after game 2 — flag if you want a cooldown or a knob.

Verified via window.T: cheat + 2nd-game both launch the horde (1st does
not); ~29 spawns over exactly 12s; pellets stream (7 in flight) and clear
a lane, building piles/gore; 4 points scored but the umpire speaks once
(rate-limited); horde ends cleanly back to pretoss; eaten still fires
mid-horde; regression ladder green — tennis 11/12, Phase 1 flick-serve,
Phase 2 DOUBLE→TRIPLE, Phase 4 MASSACRE ×4; no console errors.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

render.js

@@ -4,7 +4,7 @@ import { cv, ctx } from './dom.js';
 import { TUNE, COURT, PLAYER_H, BOY_H, UMP_H, BOUNCE_IDLE, SPRITE_H } from './config.js';
 import { P, O, ball, score, crowd, G } from './state.js';
 import { predictLanding } from './gameplay.js';
-import { zombies, gore, piles, parts } from './zombies.js';
+import { zombies, gore, piles, parts, pellets } from './zombies.js';
 
 // ---------------------------------------------------------------- palette ----
 // tennis palette -> drained splatter palette; the transition lerps between them
@@ -301,6 +301,12 @@ export function render() {
     ctx.fillStyle = pt.dark ? 'rgba(96,14,14,0.9)' : 'rgba(170,22,22,0.9)';
     ctx.fillRect(pp.x | 0, pp.y | 0, 2, 2);
   }
+  // machine-gun pellets: flat tracers with a tiny ground shadow
+  for (const pe of pellets) {
+    const sh = proj(pe.x, 0, pe.z); drawShadow(sh.x, sh.y, Math.max(1, sh.s * 0.04), Math.max(1, sh.s * 0.02), 0.25);
+    const pp = proj(pe.x, pe.y, pe.z);
+    ctx.fillStyle = '#f8e048'; ctx.fillRect((pp.x | 0) - 1, (pp.y | 0) - 1, 2, 2);
+  }
   if (G.mode !== 'eaten') drawChar(P); // there is no P anymore
 
   // HUD — scoreboard
@@ -327,7 +333,7 @@ export function render() {
     ctx.fillText('GAMES  YOU ' + score.games[0] + ' — THEM ' + score.games[1], W / 2, H / 2);
     if (G.eatenT > 0.7) { ctx.fillStyle = '#f8e048'; ctx.font = 'bold 8px monospace'; ctx.fillText('TAP TO PLAY AGAIN', W / 2, H / 2 + 20); }
   }
-  if (G.phase === 'pretoss' && score.server === 'P' && G.mode !== 'eaten') {
+  if (G.phase === 'pretoss' && score.server === 'P' && G.mode !== 'eaten' && !G.horde) {
     ctx.fillStyle = '#f8e048'; ctx.font = 'bold 8px monospace';
     const touch = matchMedia('(pointer: coarse)').matches;
     ctx.fillText(G.serveNum === 2 ? (touch ? 'SECOND SERVE — TAP' : 'SECOND SERVE — SPACE')